package net.lzzy.practices.utils;

import net.lzzy.practices.web.models.VmUser;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.util.*;

/**
 *
 */
@Component
public class AuthUtils {
    public static final List<VmUser> USERS=new ArrayList<>();
    private static int minutes;
    @Value("${app.over.minutes}")
    public void setMinutes(int minutes){
        AuthUtils.minutes=minutes;
    }
    public static VmUser getUser(String token){
        return USERS
                .stream()
                .filter(u->u.getToken().equals(token))
                .findFirst()
                .orElse(null);
    }
    public static boolean invalid(UUID userId,String token){
        VmUser user=getUser(token);
        if(user==null || isOverTime(user)){
            return true;
        }
        boolean valid=user.getId().equals(userId);
        if(valid){
            user.setLastLogin(new Date());
        }
        return !valid;
    }
    private static boolean isOverTime(VmUser user){
        long offMillis=System.currentTimeMillis()-user.getLastLogin().getTime();
        long minutes=offMillis/(1000*60);
        boolean over=minutes > AuthUtils.minutes;
        if(over){
            USERS.remove(user);
        }
        return over;
    }

    /**
     * @param token
     * @param allowedRoles
     * @return
     */
    public static boolean illegalUser(String token,int [] allowedRoles){
        VmUser user=getUser(token);
        if(user==null||isOverTime(user)){
            return true;
        }
        user.setLastLogin(new Date());
        return Arrays.stream(allowedRoles).noneMatch(r->r==user.getType());
    }

    /**
     * 注销
     */
    public static String logout(String token){
        VmUser user=getUser(token);
        if(user==null){
            return "注销失败，未发现登录记录";
        }
        USERS.remove(user);
        return "注销成功";
    }
}
